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U.S. SIEVE OPENING IN INCHES I U.S. SIEVE NUMBERS I HYDROMETER <br /> 6 4 2 1.5 1 314 112318 3 4 6 610 1416 20 30 40 50 60 100140 200 <br /> 100 <br />1 <br />1 <br />WI <br />N <br />I* <br /> 95 <br /> <br /> 90 <br /> <br /> 85 <br /> <br /> 80 <br /> 75 <br /> <br /> 70 <br /> <br /> F- 65 <br /> 60 <br />5 <br /> >- 55 <br /> m <br /> z 50 <br /> FL <br /> 45 <br /> Z <br />Iu <br /> 0 <br />40 <br /> 0: <br /> w <br />a <br /> 35 <br /> <br /> 30 <br /> <br /> 25 <br /> <br /> 20 <br /> 15 <br /> <br /> 10 <br /> <br /> 5 <br /> <br /> 0 - - <br /> 100 10 1 0.1 0.01 0.0 01 <br /> GRAIN SIZE IN MILLIMETERS <br /> <br /> <br /> <br /> <br /> <br /> Specimen Identification Classification LL PL PI Cc Cu <br /> • 1 4.Oft POORLY GRADED SAND with GRAVEL(SP) NP NP NP 0.85 8.75 <br /> W 1 19.Oft WELL-GRADED GRAVEL with SAND(GW) NP NP NP 2.15 40.40 <br /> A 1 44.Oft POORLY GRADED GRAVEL with SAND(GP) NP NP NP 0.65 61.12 <br /> * 2 19.0ft WELL-GRADED GRAVEL with SAND(GW) ?NP NP ?NP 1.12 7.50 <br />8 01 2 ' 24.0ft POORLY GRADED GRAVEL wit h SAND(GP ) N P NP NP 4.57 69.79 <br /> Specimen Identification D100 D60 D30 D10 %Gravel %Sand %Sil t %Clay <br /> • 1 4.0ft 50 <br />8 5 <br />688 774 <br />1 0 <br />65 44 <br />4 54 <br />6 1 <br />0 <br /> . . . . . . . <br />0 M 1 19.0ft 50.8 23.172 5.341 0.574 71.6 26.4 2.1 <br /> <br />a: <br />? * <br />* 1 44.0ft 76.2 41.88 4.32 0.685 67.9 30.6 0.2 <br /> 2 19.Oft 50.8 13.67 5.294 1.823 73.3 26.5 0.2 <br /> O 2 24.0ft 63.5 42.432 10.854 0.608 75.9 23.9 0.2 <br /> GRA IN SIZE DISTRI BUTION <br /> Project: Todd Bean Gravel Study <br />a erracon Site: Weld County Roads 58 & 51 Weld County, Colorado <br /> Job #: 21085006 <br /> Date: 2-29-08 <br />COBBLES GRAVEL SAND <br /> <br />coarse fine <br />coarse medium fine SILT OR CLAY